System Time & Frequency Accuracy; Gps Receiver; Time Code Input - Symmetricom XLi User Manual

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System Time & Frequency Accuracy
The tables below describe system clock accuracy while locked to the reference source indicated.
1

GPS Receiver

1 PPS Output:
Frequency Output Accuracy:
Frequency/Timing, Allan
Deviation, Stability (with
TCXO):
AM Code Output Accuracy:
DC Level Shift Code Output
Accuracy:
Time to System Lock
See GPS Signal Strength Requirements (page

Time Code Input

1 PPS Output:
Frequency Output Accuracy:
Stability of Frequency/Timing –
Allan Deviation:
Accuracy of AM Code Output:
Accuracy of DC Level Shift
Code Output:
See "F110 – J1 Input (Time Code, TIET)" on page 137.
6
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UTC(USNO) 30 nS RMS, 100 nS peak
-12
<1 x 10 @ 1 day
-9
1 x 10 @ 1 sec
-10
3 x 10 @ 10 sec
-10
3 x 10 @ 100 sec
-10
2 x 10 @ 1000 sec
-12
1 x 10 @ 1 day
10 μS to the 1 PPS output
200 nS to the 1 PPS output
<20 min. typical
10 μS to the incoming code
-10
1x10 , referenced to 5x10
-9
5x10 @ 10 sec, referenced to 3x10
10 μS to the incoming code
10 μS to the incoming code
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21), and GPS C/A Receiver (87-8028-2) (page
-11
carrier @ 1 day
-11
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@ 10 sec carrier
XLi Time & Frequency System
XLi-man, Issue 8, 6/17/2008, Rev. H
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191).